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The temperature at the point (x, y, z) in a substance with conductivity K : 5.5 is u(x, yr 2) : 2y2 + 222. Find

The temperature at the point (x, y, z) in a substance with conductivity K : 5.5 is u(x, yr 2) : 2y2 + 222. Find the rate of heat flow inward across the cylindrical surface y2 + z2 : 3, 0 S x S 3. ii

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